Suction nozzle



.Jan'. 3, 1939. EDSTROM 7 2,142,502

SUCTION NOZZLE Filed June 26, 1936 IN ENTOR.

AATTORNEY.

Patented Jan. 3, 1939 UNITED STATES PATENT OFFICE SUCTION NOZZLE Eric Edstrom, Stockholm; Sweden, assignor to Electrolux Corporation, Dover, Del a corporation of Delaware Application June 26, 1936, Serial No. 87,399

In Switzerland July 2, 1935 3 Claims.

My invention relates to suction nozzles for use in connection with a vacuum cleaner and particularly to duplex nozzles provided with openings of difierent sizes which may be selec- 5 tively connected to the source of suction. When the larger opening is in use it will cover a larger surface, thereby increasing the speed of cleaning. However, if a concentrated suction is desired in order to remove dirt which the larger opening 10 will not pick up, the small opening may be brought into use.

The objects and advantages of my invention will be apparent from the following description considered in connection with the accompanying 1! drawing which forms part of this specification,

85 may receive a conduit connected to a source of suction. Nipple l2 communicates with the interior of body l through an opening I3. Pivoted within the body at either side of the. opening are partitions or valve plates M. The interior of the forward and rear walls of the nozzle body are flat and valve plates H are dimensioned so as to fit between these walls. The pivots l5 to which the valve plates are rigidly secured are rotatably mounted in the forward wall of the nozzle body and projecttherethrough. The outer ends oi'pivots 15 have rigidly afiixed thereto intel-meshing gear segments l6, while one of the pivots is provided with knurled knob II.

In the position of the parts shown in full lines 40 in Fig. 1, valve plates I4 cut off communication between theends of the elongated opening II and the opening l3. Consequently, all of the air is constrained to flow through the small central portion of opening ll between the valve plates M. This results in a strong suction at this point. If a more distributed suction is desired, knob I1 is rotated in a counter-clock-wise direction. By virtue of the gear segments Hi the valve plates are rotated in opposite directions to 50 the positions shown in dash and dot lines in Fig. 1. In this position they do not interfere with the flow of air through'the nozzle opening II and consequently air is drawn in through the entire extent of the opening.

In order to retain the valve plates H in either of the positions in which they are set, a spring [8 is secured at l9 to the nozzle body and at 20 5 to one of the gear segments 16. In the position shown the spring passes to one side of the pivot point l5 and will tend to rotate the gear segment to which it is connected in a counter-clock-wise direction. When the segment is rotated by hand 10 to its other extreme position, the spring passes to the other side of the pivot point and consequently will tend torotate the segment to which it is connected in a clock-wise direction. Hence,

the spring tends to retain the segments in either position in which they are put.

While I have shown and described one more or less specific embodiment of my invention it is to be understood that this has been done for purposesof illustration only, and that the scope of the invention is not to be limited thereby, but is to be determined by the appended claims viewed in the light of the prior art.

What I claim is:--

1. In a suction nozzle, a hollow elongated body formed with an elongated suction opening, said body being formed with an outlet communicating with the central part thereof I and adapted to be connected to a source of suction and a partition pivotally mounted in said body to one side of said outlet, and means for pivoting said partition between a position within said body blocking the path of flow from one end of said hollow elongated body to said outlet and a position also within said body but removed from said path 5- of flow.

2. In a-suction nozzle, a hollow body having a centrally located outlet adapted to be connected to a source of suction and having elongated branches on either side of said outlet and forming an elongated suction opening, pivotally mounted members disposed within said hollow body on either side of said outlet, and means for pivoting said members between a position within said body in the path of flow from said branches to said outlet and a position also within said body but removed from said path.

3. A suction nozzle as claimed in claim 2 ineluding means for simultaneously pivoting both of said members.

ERIC EDs'mbM. 

